Knock knock — who's there? With a Ring Video Doorbell or security camera, you'll know exactly who is at the door whether you're sitting on your comfy sofa or you're two states away. Right now, Amazon is practically giving these away with discounts up to 40% off. There's no easier way to say "no" to uninvited salespeople — but "yes" to Girl Scout cookies.

Ring

Wired Video Doorbell Wired

$65

Because this model is hard-wired into your home’s electric system, there’s no need to worry about replacing batteries every few months. As long as there’s electricity flowing through your home, this guy is on the job.

$65 at Amazon

Although it resembles a standard doorbell, the Ring Video Doorbell Wired is super-powered. This smart doorbell that can provide you with a 24/7 video stream and a nice wide field of view (up to 155 degrees horizontal and 90 degrees vertical) — meaning you can see a broad swath of your property and any activity that might be occurring. The device syncs to your smartphone, tablet, laptop or streaming device (it’s easy — there’s a Ring app), so you can keep an eye on your home whether you’re inside, at work or away on that big summer vacation you’re planning. And Prime Day is the exact right moment to snap one up.

"I absolutely love this doorbell. I’m thrilled the doorbell doesn’t need batteries. I hated that," said a five-star reviewer. "The setup is so easy and the doorbell notifications come through my phone and my Alexa Echo Dot...Plus the quality of the sound from outside is really good too.... I would absolutely purchase this particular Ring doorbell again."

Amazon

Video Doorbell Pro

$170

This video doorbell packs high resolution and a lot of features into a small frame.

$170 at Amazon

At the risk of stating the obvious, when a product has the word "Pro" in its name, you can expect some snazzy features and additional functionality. When it comes to this Ring doorbell, that means advanced motion protection, 1080 HD video and a 6-second preview of motion alerts. You can also select and upload Quick Replies, which will automatically ask visitors to leave a message. As the folks at Ring put it: "It's like an answering machine for your front door." Sign up for Ring's Protect Plan feature and receive Alexa Greetings, which will provide instructions for delivery drivers...and anyone else you want to tell where to go. Heh.

"Exceeds all expectations," said one of the more than 30,000 reviewers who rated it five stars. "The wiring and assembly is so easy, anyone can do this.... You do not need an electrician, trust me. The camera is outstanding on this model. You can get a live view whenever you want to from your cellphone. The motion sensor can be adjusted as you prefer.... A great security product that has performed flawlessly so far, I love it. Definitely wish I had purchased this product long ago."

Amazon

Wired Floodlight Cam

$150$200Save $50

What's better than a home security camera? A camera accompanied by two high-powered LEDs.

$150 at Amazon

On sale for $50 off, this Ring Wired Floodlight Cam ensures that all of your outdoor spaces that need watching will be surveilled 24/7. Just follow the easy-peasy installation instructions and relax — you now got an instant live stream with sharp and clear Full HD video quality at 1080p via Wi-Fi. It also packs a 105db siren that can be used to scare off intruders — even the raccoon variety.

"I like this camera it's clear and night vision great! I plan to install two more this year. Provides good coverage and security, easy to install. I definitely recommend this purchase for home protection," said one happy customer.

Amazon

Spotlight Cam Plus

$170

See the night in all its hues thanks to this camera's color night vision feature.

$170 at Amazon

The Ring Spotlight Cam Plus is a lot like the Wired Floodlight Cam, but it looks a bit less like a traditional security camera and more like outdoor decor. It's got style — but it also lights up your yard and monitors activity in full 1080p HD. You can set up custom motion zone and much more, too.

One customer said it was just what they needed: "I really like the ease of installment and so far the camera has worked very well. We now see nightly feline visitors slip in and out of our gates, which gives us peace of mind knowing that it will also alert us to deliveries as we cannot see our gate/driveway from the house and most importantly, any people sneaking around under cover of darkness attempting to enter. We live in a very rural area, far from the nearest town, so it’s nice that a bright light shines on anyone with thieving on their mind."

Amazon

Stick Up Cam HD

$100

Small and versatile, this camera can be placed nearly anywhere within your home to keep an eye on things when you're away.

$100 at Amazon

The Ring Stick Up Cam is battery-powered rather than wired, which means it can be placed anywhere — not just beside an outlet. You can check in on your home from anywhere, at any time, and you can also speak to someone through the camera by using the mobile app or even an Echo device.

"I recently purchased a Ring Stick Up Camera and I am extremely happy with my purchase. The setup was easy and the picture quality is fantastic. I appreciate the option to use battery or plug-in power, giving me flexibility in placement," said one of more than 43,000 five-star reviewers. "The two-way audio feature is also a great bonus, allowing me to talk to whoever is at my door through the app. Overall, I feel much more secure with this camera watching over my home. I highly recommend the Ring Stick Up Camera."

The reviews quoted above reflect the most recent versions at the time of publication.

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $25 or more.)

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